LT3433 based Step Up Step Down DC to DC Converter Circuit Diagram circuit with explanation

The illustration provides below schemes 8V-60V to 12V Converter Circuit Diagram. It uses LT3433, an automatic step up and step down switching regulator IC with 4V to 60V input voltage which can be useful in automotive electronics using various wide input voltage range.

According to the LT3433 datasheet, this Automatic Step-Up and Step-Down Conversion device is a 200kHz fixed frequency current mode switching regulator using a single inductor which can be applied in applications such as wall adapter powered systems and battery power voltage buffering.

Read completely about Step Up/Step Down DC to DC Converter Circuit Diagram using LT3433 here in pdf archive (source: linear.com)

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High Power LEDs up to 15 Amperes Wiring diagram Schematic

This High Power LEDs up to 15 Amperes Circuit Diagram employs a simple scheme that limits the current flow to the LED, you can easily modify the schema, and can change the power just replacing the value of R2. You can use a DC source of any tensions between 9V to 15V.Para powers or other LEDs just use the approximate formula:

Current (I) = 0.8/R2 where I is the current specified by the LED manufacturer. Value of I this conductor is 10A. Use R2 = 0.8/Current formula (I) to determine R2.

High Power LEDs up to 15 Amperes Circuit Diagram

Parts List

Q1 2N3055 or similar NPN transistor

R1 1W 220ohms

D1, D2 1N4001 silicon diode or rectifier

See R2 power for each LED

R2 for 1W LED 1W 2.7ohms

R2 LED to 1.5 ohms 1W 3W

5W LED R2 to 0.6 ohms or 2 x parallel 1.2-ohms/1W

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